Re: (ET) shunt for Alltrax E15 retrofit - what specs, or how to substitute?

[SteveS <ssawtelle fcc net>]

- But the big problem is that my original circuit didn't have a shunt, at least not one I recognized as such.  And if - it was just a length of wire like Steve said he saw on a E20, then I have no idea which wire it was.  

Oh yeah, I forgot to add:

The E12S (and E15 too I think) use a piece of copper sheet about an 
1"x3" (I'm guessing here) just about in the middle of the relay area 
behind the large panel under the dash. It's set up as a four point probe 
- big bolts at each end for power connections with two small sense 
connections in between. One is adjustable. I believe some listers here 
have mentioned problems with corrosion around the various connections to 
the shunt so it may not be a good choice to keep (Others, am I right 
about that?).

- SteveS